JP2009283247A - Exothermic body unit, and heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an exothermic body unit and a heating device using that exothermic body unit as a heat source high in usability which is capable of providing a downsized exothermic body unit high in reliability by a simple constitution, long in lifetime, high in efficiency, and easily adjustable in various usages. <P>SOLUTION: In this exothermic body unit, since a first container and a second container are retained with a gap of a prescribed distance by a container retaining part, a reflective plate is arranged in the gap opposed to the exothermic body, and a sliding part is constituted to retain the reflective plate capable of sliding in the longitudinal direction of the exothermic body, the reflective plate is not deformed, and heating high in efficiency can be maintained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heating element unit used as a heat source and a heating device using the heating element unit, and more particularly, a heating element unit having a structure in which a heating element mainly composed of a carbon-based material is accommodated in a double container. And a heating device using the heating element unit. Examples of the heating device according to the present invention include various devices that require a heat source such as an electronic device such as a copying machine, a facsimile, and a printer, and an electric device such as an electric heating device, a cooking device, and a dryer.

In a heating device, for example, when a heating element unit is incorporated as a heat source for a cooker or the like, substances that scatter from an object to be heated during heating, and various contaminants that exist in the environment in which they are used are also exposed to the outer surface of the heating element unit When attached to a heat-permeable tube, which is a container constituting the heat-permeable tube, the heat-permeable tube may be devitrified and cannot be used. In order to prevent such devitrification, a heating element unit is provided in which a heating element is housed in a double heat-permeable tube (see Patent Document 1).
JP 2007-149649 A (FIGS. 11-13)

  In a conventional heating element unit in which a heating element is housed in a double heat-transmitting tube, a reflector is provided in order to specify a heating region and perform efficient heating. The heating element unit provided as a heat source in the heating device is, for example, a heating element unit having a double heat transmission tube shown in FIG. 11 of Patent Document 1 is reflected in the gap between the double heat transmission tubes. The plate is fixed, the radiant heat from the heating element is reflected, and the specific heating area is heated efficiently. As described above, in the conventional heating element unit, the reflector is fixed in the gap between the two heat-transmitting tubes for the purpose of downsizing and integrating the heat source.

  Along with the downsizing of the heating device, further miniaturization and space saving are desired also in the heating element unit as a heat source. In the heating element unit that fixes the reflector in the gap between the two heat-transmitting tubes, the gap between the two heat-transmitting tubes is reduced and the thickness of the reflector is reduced. This is one solution for achieving this. However, in the structure of the conventional heating element unit, when the reflecting plate is formed thin and the reflecting plate is fixed in the gap between the two heat-transmitting tubes, the reflecting plate is thermally expanded by the radiant heat from the heating element. Then, there is a problem that the reflecting surface is distorted, and further, the reflecting plate is greatly deformed, so that heating with high efficiency cannot be performed. In the worst case, the heating element unit may be damaged.

  The present invention can provide a small heat generating unit with a simple configuration and high reliability, and has a long life, high efficiency, and a versatile heat source that can be easily adapted in various applications. It is an object of the present invention to provide a heating element unit and a heating device using the heating element unit.

The heating element unit according to the first aspect of the present invention is:
A first container that houses a long heating element;
A second container covering the first container;
A double-layer heating element unit comprising: a container holding unit that holds a gap between the first container and the second container at a predetermined distance;
A long reflector provided in the gap and disposed at a position facing the heating element;
A sliding portion disposed outside the reflecting plate in the longitudinal direction and configured to hold the reflecting plate in a slidable manner in the longitudinal direction of the heating element. Since the heating element unit according to the first aspect of the present invention configured as described above is provided with a sliding portion that slidably holds the reflecting plate, the reflecting plate is distorted and deformed by thermal expansion. Therefore, efficient heating can be maintained.

In the heating element unit according to the second aspect of the present invention, the sliding part according to the first aspect includes:
A sliding shaft portion derived from one end of the reflector in the longitudinal direction of the heating element;
A slide that is provided at a position opposite to the sliding shaft portion in the lead-out direction of the container holding portion, holds the tip portion of the sliding shaft portion, and arranges the reflector so as to be slidable in the longitudinal direction of the heating element. A moving part. In the heat generating unit according to the second aspect of the present invention configured as described above, the reflecting plate is disposed in the gap between the first container and the second container, and the sliding shaft portion slides during thermal expansion. By sliding the receiving portion, distortion, deformation and the like of the reflecting plate during thermal expansion are surely prevented.

In the heating element unit according to the third aspect of the present invention, the sliding portion according to the first aspect includes:
A sliding shaft portion derived from one end of the reflector in the longitudinal direction of the heating element;
A sliding receiving portion is provided which is provided at a position opposite to the sliding shaft portion in the lead-out direction, holds the tip portion of the sliding shaft portion, and arranges the reflecting plate so as to be slidable in the longitudinal direction of the heating element. And a sliding receiving member. In the heat generating unit according to the third aspect of the present invention configured as described above, the reflecting plate is disposed in the gap between the first container and the second container, and the sliding shaft portion slides during thermal expansion. By sliding the receiving portion, distortion, deformation and the like of the reflecting plate during thermal expansion are surely prevented.

In the heating element unit according to the fourth aspect of the present invention, the sliding part according to the first aspect includes:
A sliding shaft member formed with a sliding shaft portion led out in the longitudinal direction of the heating element in the gap;
A slide that is provided at a position opposite to the slide shaft in the lead-out direction of the reflector, holds the tip of the slide shaft, and arranges the reflector so as to be slidable in the longitudinal direction of the heating element. And a receiving part. In the heating element unit according to the fourth aspect of the present invention configured as described above, the reflecting plate is disposed in the gap between the first container and the second container, and the sliding shaft portion slides during thermal expansion. By sliding the receiving portion, distortion, deformation and the like of the reflecting plate during thermal expansion are surely prevented.

  In the heating element unit according to the fifth aspect of the present invention, the sliding shaft portion according to the second or third aspect is formed integrally with the reflector having the sliding shaft portion. The heating element unit according to the fifth aspect of the present invention thus configured has a simple configuration and can provide a heat source that can be easily assembled.

In the heating element unit according to the sixth aspect of the present invention, the sliding shaft portion according to the second or third aspect may be fixed to the reflector having the sliding shaft portion.
In the heating element unit according to the seventh aspect of the present invention, the sliding shaft portion according to the second or third aspect is fitted into a recess formed in the reflecting plate having the sliding shaft portion. It may be fixed.
In the heating element unit according to the eighth aspect of the present invention, the sliding receiving portion according to the second aspect is a hole formed in the container holding portion having the sliding receiving portion, and is slid into the hole. You may comprise so that a moving shaft part may be hold | maintained.

In the heating element unit according to the ninth aspect of the present invention, the sliding receiving member according to the third aspect includes a sliding receiving portion that holds the sliding shaft portion, and the container holding the sliding receiving member. It is good also as a structure which has a slide receiving holding part hold | maintained to a part.
In the heating element unit according to the tenth aspect of the present invention, the sliding shaft member according to the fourth aspect is formed of a wire material, and a sliding shaft portion led out in the longitudinal direction of the heating element, and the sliding It is good also as a structure which has a sliding shaft holding part which hold | maintains a shaft member in the said container holding part.
In the heating element unit according to the eleventh aspect of the present invention, the sliding receiving member according to the ninth aspect may have a sliding receiving mounting portion that is mounted on the first container.
In the heating element unit according to the twelfth aspect of the present invention, the sliding shaft member according to the tenth aspect may include a sliding shaft mounting portion that is mounted on the first container.
In the heating element unit according to the thirteenth aspect of the present invention, the first container and the second container according to the second to twelfth aspects may be formed of a tubular heat-permeable member.

In the heating element unit according to the fourteenth aspect of the present invention, the sliding shaft part according to the second to thirteenth aspects may have a rectangular cross section perpendicular to the longitudinal direction of the reflector.
In the heating element unit according to the fifteenth aspect of the present invention, the sliding shaft part according to the second to fourteenth aspects may be composed of a plurality of rod-shaped bodies.
In the heating element unit according to the sixteenth aspect of the present invention, the reflecting plate according to the first to fifteenth aspects may have an arcuate cross section perpendicular to the longitudinal direction of the reflecting plate.

In the heat generating unit according to the seventeenth aspect of the present invention, the reflecting plate according to the first to fifteenth aspects may have a polygonal cross section perpendicular to the longitudinal direction of the reflecting plate.
In the heating element unit according to the eighteenth aspect of the present invention, the reflection plate according to the first to seventeenth aspects has a concave or convex shape in a part of a cross section perpendicular to the longitudinal direction of the reflection plate. But you can.

  Since the heating device according to the nineteenth aspect of the present invention is equipped with the heating element unit according to the first to eighteenth aspects as a heat source, the heating device has a long life, high heating efficiency, and high reliability. Become.

  According to the present invention, a heat generating unit as a highly versatile heat source that has a long life, is small and has high efficiency, and can be easily adapted in various applications, and reliable heating using the heat generating unit. An apparatus can be provided.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a heating element unit and a heating device using the heating element unit according to the present invention will be described with reference to the accompanying drawings.

Embodiment 1
FIG. 1 is a plan view showing a configuration of a heating element unit according to Embodiment 1 of the present invention. In FIG. 1, in the heating element unit of Embodiment 1, a heating element 3 as a heat source is housed in a double container composed of a heat-permeable tube having heat permeability. In the heating element unit according to the first embodiment, a first heat-transmitting tube (first container) 1 that houses the heating element 3 and a second heat-transmitting tube (second container) that covers the first heat-transmitting tube 1. 2 and. The first heat-transmitting tube 1 and the second heat-transmitting tube 2 are fixed with a predetermined gap (gap) by container holding portions 10 provided at both end portions thereof.

  As shown in FIG. 1, in the heating element unit according to the first embodiment, a sheet-like reflecting plate 11 is disposed in the gap between the first heat-transmitting tube 1 and the second heat-transmitting tube 2. . The reflecting plate 11 is disposed at a position corresponding to the heating element 3 and has a length (L) slightly longer than the heating part of the heating element 3. The reflecting plate 11 is disposed at a position intersecting with the flat portion of the heating element 3 (upper surface portion in the heating element 3 in FIG. 1), and reflects the heat radiated from the flat portion of the heating element 3 to the front side (in FIG. 1). The cross section orthogonal to the longitudinal direction of the reflecting plate 11 has an arc shape. Reflector 11 in Embodiment 1 is heat-resistant (900 to 1000 ° C.) using a ferritic stainless steel plate thickness of 50 μm having excellent heat resistance, and deposits alumina on the surface, which makes it difficult to discolor at high temperatures. A surface film was formed, and the material was able to maintain a high reflectivity even at high temperatures.

  The reflecting plate 11 is slidably disposed in the longitudinal direction within a predetermined gap (gap) between the first heat-transmitting tube 1 and the second heat-transmitting tube 2 within a range facing the heating element 3. ing. The reflecting plate 11 includes a first heat permeable tube by a sliding receiving portion 13 provided in the container holding portion 10 and a sliding shaft portion 12 extending in the longitudinal direction of the heating element 3 from both sides of the reflecting plate 11. It is held in a gap (gap) between 1 and the second heat-permeable tube 2. The sliding shaft portion 12 and the sliding receiving portion 13 that hold the reflecting plate 11 in a predetermined position will be described later.

  Inside the first heat transfer tube 1, a part of the heating element constituting portion including the heating element 3 is disposed, and both end portions of the first heat transfer tube 1 are melted and crushed into a flat plate shape and sealed. It has been stopped. Argon gas as an inert gas is sealed inside the first heat transfer tube 1. The inert gas that can be sealed inside the first heat-transmitting tube 1 is not limited to argon gas, but in addition to argon gas, nitrogen gas, or argon gas and nitrogen gas, argon gas and xenon gas, Even if a mixed gas such as argon gas and krypton gas is used, the same effect can be obtained, and the inert gas to be sealed can be appropriately selected according to the purpose and the like. The reason why the inert gas is sealed inside the first heat-permeable tube 1 is to prevent oxidation of the heating element 3 that is a carbon-based material housed inside the container when used at a high temperature.

  The heating element component includes a long and substantially flat heating element 3 as a heat radiator, a holding part 4 fixed to both ends of the heating element 3, and a coil part 5 attached to the outer end of the holding part 4. A spring portion 6 connected to the coil portion 5, an internal lead wire 7 integrally formed with the spring portion 6, an external lead wire 9 led out from both end portions of the first heat transfer tube 1, and an internal lead wire 7 And a molybdenum foil 8 that electrically connects the external lead wire 9 to each other.

  The internal lead wire 7 is joined to the vicinity of one end of the molybdenum foil 8 by welding, and an external lead wire 9 for supplying electric power to the heating element 3 is welded to the vicinity of the other end of the molybdenum foil 8. Molybdenum foil 8 that connects the internal lead wire 7 and the external lead wire 9 is embedded in a sealed portion that is crushed flat at both ends of the first heat-permeable tube 1.

  The heating element 3 in the heating element unit of the first embodiment is a carbon-based material formed in an elongated flat plate shape, and a resistance adjusting substance of a nitrogen compound and amorphous carbon are added to a crystallized carbon substrate such as graphite. Made up of a mixture. The heating element 3 has, for example, a plate width of 6.0 mm, a plate thickness of 0.5 mm, and a length of 300 mm. In the heating element 3, it is desirable that the ratio (T / t) between the plate width T and the plate thickness t is 5 or more, that is, the plate width T is 5 times or more of the plate thickness t. By making the plate width T into a flat plate shape that is five times larger than the plate thickness t, the amount of heat emitted from a wide plane (surface constituting the plate width T) is larger than the amount of heat emitted from a narrow side surface (surface constituting the plate thickness t). Thus, directivity can be imparted to the heat radiation of the flat heating element 3.

  As shown in FIG. 1, the end of the heating element 3 is fixed to one end of the holding part 4 of the heating element constituting part, and the coil part 5 is wound around the other end of the holding part 4. The coil part 5, the spring part 6, and the internal lead wire 7 are integrally formed of molybdenum wire. In the first embodiment, an example in which the coil portion 5, the spring portion 6, and the internal lead wire 7 are formed of molybdenum wire will be described. However, in addition to the molybdenum wire, a metal wire having elasticity such as tungsten, nickel, stainless steel (round) You may comprise using a rod shape and flat plate shape. Moreover, although the coil part 5, the spring part 6, and the internal lead wire 7 in Embodiment 1 are each demonstrated by the example comprised by the integral wire, each is formed with another member according to a function, and each is joined. It is also possible to configure.

  The coil part 5 is tightly wound around the outer peripheral surface of the holding part 4 and spirally wound, and the holding part 4 and the coil part 5 are electrically connected reliably. The spring portion 6 formed in a spiral shape with elasticity is used to apply tension to the heating element 3, and the heating element 3 is placed in a desired position inside the first heat transfer tube 1 by the spring portion 6. Always placed. In addition, by providing the spring portion 6 between the coil portion 5 and the internal lead wire 7 in this way, it becomes possible to absorb a dimensional change due to thermal expansion of the heating element 3.

  In the heating unit of the first embodiment, an example in which the spring portion 6 is provided on both ends of the heating element 3 will be described, but a configuration in which the spring portion 6 is provided only on one side of the heating element 3 is also possible. Needless to say.

  The first heat-transmitting tube 1 that houses the heating element 3 configured as described above is disposed with a predetermined gap inside the second heat-transmitting tube 2 that is a cylindrical second container. As described above, the container holding portion 10 is provided in order to dispose the first heat permeable tube 1 with a predetermined gap inside the second heat permeable tube 2. FIG. 2 is an enlarged view showing the vicinity of the container holding unit 10 in the heating element unit according to the first embodiment.

  As shown in FIG. 2, the first heat-transmitting tube 1 and the second heat-transmitting tube 2 are fixed to the container holding unit 10, and a predetermined gap is provided between the first heat-transmitting tube 1 and the second heat-transmitting tube 2. The gap is secured. The container holding | maintenance part 10 has the cylindrical part 10a which comprises an external appearance, and the collar part 10b formed in the inside. A through hole is formed in the flange portion 10b, and the first heat-permeable tube 1 is provided through the through hole. There is a stepped portion 10c between the cylindrical portion 10a and the flange portion 10b, and the end of the second heat-transmitting tube 2 is fitted into the stepped portion 10c. The container holding part 10 thus formed is formed using a ceramic material such as steatite, alumina, or a metal such as aluminum or stainless steel.

  The first heat permeable tube 1 penetrating through the flange 10b of the container holding part 10 is securely fixed by an adhesive 15 that joins between the container holding part 10 and the first heat permeable pipe 1. Further, the second heat permeable tube 2 fitted to the stepped portion 10 c of the container holding portion 10 is securely fixed by an adhesive 14 that joins between the container holding portion 10 and the second heat permeable tube 2. As described above, the first heat-transmitting tube 1 and the second heat-transmitting tube 2 are fixed to the container holding part 10, whereby a gap (gap) between the first heat-transmitting tube 1 and the second heat-transmitting tube 2. Is hermetically sealed. In addition, as the adhesives 14 and 15 which fix the container holding | maintenance part 10 to the 1st heat permeable tube 1 and the 2nd heat permeable tube 2, the inorganic heat resistant adhesive which uses alumina as a main raw material, or this inorganic heat resistant adhesive, for example Further, it may be configured to contain silicon dioxide, magnesium oxide or the like.

  In the heating element unit of the first embodiment, the reflecting plate 11 is disposed in the gap between the first heat-transmitting tube 1 and the second heat-transmitting tube 2, and the reflecting plate 11 slides on the sliding shaft portion 12. The sliding part constituted by the receiving part 13 is slidably held in the longitudinal direction of the reflecting plate 11. The sliding shaft portion 12 is a shaft body (round bar shape or flat plate shape) extending along the direction (longitudinal direction) of the container holding portion 10 from both end portions of the reflecting plate 11 in the longitudinal direction. The protruding end is inserted and held in the sliding receiving portion 13 provided in the container holding portion 10.

  As shown in FIG. 2, the slide receiving portion 13 is a cylindrical body provided in the flange portion 10 b of the container holding portion 10, one (inner end portion) is open and the other (outer end portion) is closed. is doing. The projecting end of the sliding shaft portion 12 is inserted into the opening of the sliding receiving portion 13, and the distal end of the projecting end portion of the sliding shaft portion 12 and the closed outer end portion of the sliding receiving portion 13 ( A gap is formed between the closed end). That is, the length (full length) to both ends of the sliding shaft portion 12 formed on both sides of the reflector 11 is the outer end portion of the sliding receiving portion 13 provided on both end sides of the second heat-transmitting tube 2 ( The length between the closed ends is shorter. The setting of these lengths is determined by the magnitude of thermal expansion of the reflecting plate 11 when the heating element 3 generates heat. The sliding shaft portion 12 and the sliding receiving portion 13 are made of a material having heat resistance and oxidation resistance, for example, a metal such as stainless steel.

  As described above, in the heating element unit of the first embodiment, the sliding receiving portion 13 holds the sliding shaft portion 12 so as to be slidable in the longitudinal direction. Thus, since the reflecting plate 11 is slidably disposed by the sliding shaft portion 12 and the sliding receiving portion 13, the thermal expansion of the reflecting plate 11 due to radiant heat during the heat generation of the heating element 3 is ensured. Absorbing and preventing distortion and deformation of the reflecting plate 11 during heat generation, it is possible to perform heating with high reliability and efficiency.

  In addition, the flange 10b of the container holding part 10 provided with the sliding receiving part 13 fixes the second heat permeable tube 2 with the adhesive 15 and also fixes the sliding receiving part 13 so that the sliding receiving part 13 is fixed. The part 13 uses a cylindrical body that is open on both sides, and even if one side is closed with the adhesive 15, the gap (gap) between the second heat-transmitting tube 2 and the first heat-transmitting tube 1 is completely sealed. Is possible.

  In the first embodiment, the container holding portion 10 has been described as having a cylindrical sliding receiving portion 13 as a separate member. However, a hole as the sliding receiving portion 13 is formed in the container holding portion 10. Thus, the container holding part 10 and the sliding receiving part 13 may be integrated.

  As described above, in the heating element unit according to the first embodiment, the first heat transfer tube 1 and the second heat transfer tube 2 are fixed to the container holding unit 10, and the first heat transfer tube 1 and the second heat transfer tube 1 are fixed. A desired gap is formed between the heat pipe 2 and the reflector 11 is slidably disposed in the gap. In the case where the heating element unit according to the first embodiment configured as described above is incorporated in a heating device as a heat source, contamination that occurs in the heating region during heating by being attached to the housing at a position where the container holding unit 10 is provided. The substance is prevented from flowing out of the heating area from between the housing and the heating element unit. This is because the container holding unit 10 can easily be configured to block the space between the second heat-transmitting tube 2 of the heating element unit and the housing. In addition, by using a sealing member, for example, a heat-resistant and flexible resin material or the like, on the mounting portion between the heating element unit and the casing of the heating device, contaminants generated in the heating area during heating are removed from the heating area. Outflow is reliably prevented.

  Further, when the heating element unit according to the first embodiment is used for a heating device, the first heat-transmitting tube 1 is housed inside the second heat-transmitting tube 2, and a gap is formed between the container holding unit 10 and the adhesives 14 and 15. Since the structure is hermetically sealed, the first heat-transmitting tube 1 is protected by the second heat-transmitting tube 2 from contaminants generated during heating, thereby extending the life.

  Since the first heat-transmitting tube 1 has a configuration in which a sealed portion is formed by welding, a heat-transmitting tube such as a quartz heat-transmitting tube is used, and contaminants (such as alkaline metals) adhere to such a heat-transmitting tube. When the temperature is reached, there is a problem that a phenomenon called devitrification occurs and the heat-permeable tube is broken. However, in the heating element unit according to the first embodiment, the first heat permeable tube 1 is provided so as to cover the second heat permeable tube 2 with a predetermined gap. The temperature is lower than that of the heat transfer tube 1 and the phenomenon of devitrification hardly occurs. In addition, by using crystallized glass as the material of the second heat-transmitting tube 2, the structure of further devitrification is unlikely to occur. As described above, in the heating element unit according to the first embodiment, the second heat permeable tube 2, the container holding unit 10, and the adhesives 14 and 15 allow contaminants to enter the first heat permeable tube 1 in the heating region. It is the structure which prevents physically reliably.

  In addition, as the 2nd heat permeable tube 2, the heat permeable tube which has heat resistance according to the use condition, for example, a quartz heat permeable tube, a high silica glass tube, and a low alkali borosilicate heat permeable tube are crystallized glassy and high temperature Corrosion resistance is strong and devitrification is unlikely to occur. In addition, a ceramic tube or the like can be selected and used. The consideration conditions in the use state include the use temperature, the degree of heat transmission, the degree of generation of alkaline metal as a contaminant, the strength, and the like, and the material of the second heat transfer tube 2 is selected in consideration of these conditions. The The first heat permeable tube (first container) 1 disposed inside the second heat permeable tube 2 can be any material having heat resistance, insulation and heat permeability, such as quartz. In addition to glass, it is appropriately selected from glass materials such as soda lime glass, borosilicate glass and lead glass, ceramic materials and the like.

In the heating element unit according to the first embodiment, by providing the reflecting plate 11 at a position that intersects the flat portion of the heating element 3, it is possible to widen the radiation width of the heating element unit, and a wider heating area. Can be obtained.
Further, by providing the reflector 11 on the back side of the heat generating element 3 having the directivity whose width of the heat generating element is five times or more of the thickness, the directivity of the heat generating unit can be further increased, and the object to be heated It becomes possible to specify the heating area according to the above. Thus, the positional relationship (intersecting angle) between the heating element 3 and the reflecting plate 11 is not limited to the configuration described with reference to FIGS. 1 and 2, and can be appropriately selected according to the device used. It is.

  In the heating element unit according to the first embodiment, the reflector 11 is disposed in the gap between the first heat-transmitting tube 1 and the second heat-transmitting tube 2, and the gap is sealed. , For example, in a heating device, contaminants generated in the heating region during heating do not directly adhere to the reflecting plate 11, so that the reflecting surface of the reflecting plate 11 does not change color, The reflectance can be maintained.

  In addition, although the ferritic stainless steel was used as the reflecting plate 11 in Embodiment 1, materials, such as nickel (Ni), nichrome, gold | metal | money, platinum, a chromium alloy, etc. which are hard to discolor at high temperature and have high reflectance, for example. Even if used, the same effect can be obtained. In addition, when the temperature does not increase structurally, aluminum (AL), aluminum alloy, general stainless steel, copper alloy, or a plate material in which a metal thin film such as aluminum, titanium nitride, nickel, or chromium is formed on the surface of a heat-resistant material The same effect can be obtained by using.

  As described above, according to the heating element unit of the first embodiment of the present invention, the first heat transfer tube 1 is protected by the second heat transfer tube 2 and the container holding unit 10, and the long life of the heating element 3 is achieved. When the object to be heated is heated, the reflector 11 is slidably disposed in the gap (gap) between the first heat-permeable tube 1 and the second heat-permeable tube 2. A highly reliable and efficient heating device can be provided by forming a reflector that is less likely to change its shape while increasing directivity.

  In the heating element unit of the first embodiment, the description has been given of the example in which the sliding portion is configured on both sides of the reflecting plate 11, but the sliding portion is slid only on one side of the reflecting plate 11 in consideration of use conditions and product specifications. A configuration is also possible in which the reflection plate 11 is fixed to the container holding portion.

  In the heating element unit of the first embodiment, the heating element 3 has been described as a flat plate, but a sheet-like (strip-shaped) heating element formed of carbon fiber or the like is used on the back side. An effect similar to that of the first embodiment can be obtained by adopting a configuration in which a sliding portion is provided to absorb the thermal expansion of the arranged reflector.

  In the heating element unit according to the first embodiment, the structure in which the first heat-transmitting tube 1 is sealed has been described. In this structure, the heating element 3 is a tungsten-based or molybdenum-based oxide that is oxidized at a high temperature in the air. It is composed of carbon-based materials, carbon-based materials, and resistance adjusting agents. However, when the heating element is made of silicon carbide, molybdenum disilicide, lanthanum chromite, nichrome, or stainless steel that can be used in the air, the sealing structure as in the first embodiment and Needless to say, you don't have to.

As described above, in the heating element unit according to the first embodiment of the present invention, the first heat transfer tube 1 is protected by the second heat transfer tube 2, the container holding unit 10, and the adhesives 14, 15, thereby generating heat. By extending the life of the body 3 and disposing the slidable reflector 11 in the gap (gap) between the first heat-transmitting tube 1 and the second heat-transmitting tube 2, an object to be heated It is possible to provide a heating device that can improve the directivity when heating and can realize reliable and efficient heating.
The heating element 3 described in the first embodiment is a carbon-based substance formed in an elongated flat plate shape as a heating element material, and a resistance adjusting substance of a nitrogen compound on a crystallized carbon substrate such as graphite, However, the present invention is not limited to such a heating element material. For example, a coiled tungsten wire, carbon fiber, or carbon fiber is knitted. Even if it is a thing, the effect similar to this invention can be acquired.

Embodiment 2
The heating element unit according to the second embodiment of the present invention will be described below with reference to FIGS. The heating element unit of the second embodiment is various modifications of the reflecting plate and the sliding portion in the heating element unit of the first embodiment described above, and the configuration other than the reflecting plate and the sliding portion is the heat generation of the first embodiment. Same as body unit. Therefore, in the description of the second embodiment, the same components as those described in the heating element unit of the first embodiment are denoted by the same reference numerals, and the description of the first embodiment is applied to the description.
3 to 10 are perspective views showing various configurations (shapes) used as the reflector 11 in the heating element unit according to the second embodiment. In addition, in the reflecting plate 11 shown in FIGS. 3 to 10, an example in which the sliding shaft portion 12 or the sliding receiving portion 16 is provided at one end portion of the reflecting plate 11 is shown. The end is omitted.

  FIG. 3 is a perspective view showing the reflector 11 used in the heating element unit of the first embodiment shown in FIG. The reflecting plate 11 shown in FIG. 3 has a cross section perpendicular to the longitudinal direction of the reflecting plate 11 in an arc shape, and is joined so that the sliding shaft portion 12 of a round bar having a round cross section is led out in the longitudinal direction on the outer peripheral surface. (Spot welding). The joining position is on a substantially central axis parallel to the longitudinal direction including the center of gravity of the reflecting plate 11.

In the reflecting plate 11 shown in FIG. 4, a sliding shaft portion 12 of a round bar-like body having a round cross section, which is another member, is joined to a reflecting surface that is an inner surface of the reflecting plate 11.
In the reflecting plate 11 shown in FIG. 5, the sliding shaft portion 12 of a thin long rectangular bar (a cross section perpendicular to the longitudinal direction of the reflecting plate is rectangular), which is a separate member, is joined to the reflecting surface that is the inner surface of the reflecting plate 11. Has been. By comprising in this way, a joining surface with the reflecting plate 11 becomes wide, and stronger joining is attained.

  The reflecting plate 11 shown in FIG. 6 has a sliding shaft portion 12 and a reflecting plate 11 integrally formed, and the sliding shaft portion 12 has a thin and long rectangular bar shape. By comprising in this way, it becomes possible to prevent the failure | damage of the junction part by the thermal expansion at the time of heat_generation | fever because the reflecting plate 11 and the sliding shaft part 12 are the same materials.

  The reflecting plate 11 shown in FIG. 7 is provided with a plurality of (three in FIG. 7) sliding shaft portions 12 each having a round bar-like body having a round cross section, which is a separate member. In the case of the reflecting plate 11 shown in FIG. 7, since a plurality of sliding shaft portions 12 are provided, a plurality of sliding receiving portions 13 are provided in the container holding portion 10 corresponding to these sliding shaft portions 12. One is provided. 7 is configured to be slidable at a plurality of locations, so that the reflection plate 11 is distorted and prevented from being deformed during thermal expansion, and the reflection surface has a desired shape. Maintained.

The reflecting plate 11 shown in FIG. 8 has a recess formed in a portion where the sliding shaft portion 12 of the reflecting plate 11 is joined, and the sliding shaft portion 12 of a round bar-like body is fitted into the recess, so that the sliding shaft The part 12 and the reflecting plate 11 are joined. By comprising in this way, the contact area of the reflecting plate 11 and the sliding shaft 12 increases, and solid joining becomes possible.
The reflecting plate 11 shown in FIG. 9 has a shape bent at a plurality of straight line positions parallel to the longitudinal direction, and a cross section perpendicular to the longitudinal direction is formed in a substantially arc shape. That is, the reflecting plate 11 of FIG. 9 has a polygonal cross section perpendicular to the longitudinal direction of the reflecting plate 11, and a substantially circular arc is formed by the polygonal shape. In addition, the reflecting plate 11 of FIG. 9 can be configured by joining a plurality of flat plates.

Unlike the structure shown in FIGS. 3 to 9, the reflecting plate 11 shown in FIG. 10 has a sliding receiving portion 16 formed on the reflecting plate 11. The sliding receiving portions 16 protrude from both end portions in the longitudinal direction of the reflecting plate 11 and are formed integrally with the reflecting plate 11. Accordingly, the sliding shaft portion 12 is provided in the container holding portion 10, and the through hole of the sliding receiving portion 16 is penetrated by the sliding shaft portion 12 provided in the container holding portion, so that the reflecting plate 11 slides. The shaft portion 12 is slidably held. The sliding receiving portion 16 is on a substantially central axis parallel to the longitudinal direction including the center of gravity of the reflecting plate 11.
Further, in the configuration shown in FIG. 3 to FIG. 9, the example in which the sliding shaft portion 12 is provided on the reflecting plate 11 has been described, but on the contrary, the sliding shaft portion 12 is provided on the container holding portion 10 to 11 may be provided.

As described above, the reflector 11 shown in FIGS. 3 to 10 has a substantially arc-shaped cross section perpendicular to the longitudinal direction, and an arc shape between the first heat-transmitting tube 1 and the second heat-transmitting tube 2. It has a shape that can be arranged in a narrow gap.
Moreover, as a shape of the reflecting plate 11, a concave portion or a convex portion is formed in part to increase the rigidity as the reflecting plate 11, and the structure can prevent twisting and distortion. In addition, by forming a concave portion or a convex portion on the reflecting plate 11, the contact area between the reflecting plate 11 and the first heat transfer tube 1 is reduced, and the temperature rise of the reflecting plate 11 can be suppressed.
FIG. 11 shows an example in which the concave portion 11a along the longitudinal direction is formed on the reflecting plate 11, and FIG. 12 shows an example in which the convex portion 11b along the longitudinal direction is formed on the reflecting plate 11. Thus, by forming a recessed part or a convex part in a part of the reflecting plate 11, the rigidity of the reflecting plate 1 is increased, and handling of the reflecting plate 11 during assembly is facilitated. As a result, a highly reliable heat source can be provided.

Embodiment 3
Hereinafter, a heating element unit according to Embodiment 3 of the present invention will be described with reference to FIGS. The heating element unit according to the third embodiment is a modification of the sliding portion in the heating element units according to the first and second embodiments described above, and the configuration other than the sliding portion is the first embodiment and the first embodiment. It is the same as 2 heating element units. Therefore, in the description of the third embodiment, the same components as those described in the heating element unit of the first embodiment are denoted by the same reference numerals, and the description of the first embodiment is applied to the description.

FIG. 13 is a perspective view showing an example in which the sliding receiving member 17 of the sliding portion is formed of a wire, and shows the reflecting plate 11, the sliding shaft portion 12, the sliding receiving member 17, and the container holding portion 10. Yes. In the sliding portion shown in FIG. 13, the sliding receiving member 17 is formed of a wire, for example, a metal wire (round bar shape, flat plate shape) having elasticity such as molybdenum wire, tungsten, nickel, stainless steel, etc. The receiving part 17a is formed by forming a wire in a ring shape. The slide receiving member 17 is formed with an arcuate slide receiving / attaching portion 17c having a diameter larger than that of the sliding receiving portion 17a. The slide receiving / attaching portion 17c is formed on the outer surface of the first heat-permeable tube 1. The sliding receiving member 17 is attached to the first heat-transmitting tube 1 in close contact with the first heat-transmitting tube 1. Further, a slide receiving / holding portion 17b protruding in the direction of the container holding portion 10 is formed at the end of the slide receiving / mounting portion 17c. Is inserted into a bottomed hole 10a formed on the side surface opposite to the bottom. In this way, the sliding receiving member 17 is fixed to the container holding portion 10 so that the sliding receiving member 17 does not move in the gap between the first heat permeable tube 1 and the second heat permeable tube 2. Yes. As described above, in the sliding portion shown in FIG. 13, since the sliding receiving member 17 is made of a wire, assembly of the heating element unit is facilitated, and the radiant heat received from the heating element 3 is radiated. Has an effect.
The sliding receiving / mounting portion 17c has been described as a semicircular (1/2 of the circumference) arc shape in close contact with the outer surface of the first heat-transmitting tube 1, but the sliding receiving / mounting portion 17c is the first. The present invention is not limited to the semicircular shape as long as it is configured to be attached to the heat-transmitting tube 1, and may be a ring shape that is annular, or a shape that has a smaller arc.

  FIG. 14 is a perspective view showing a sliding receiving member 18 having another configuration of the sliding receiving member 17 shown in FIG. The slide receiving member 18 shown in FIG. 14 includes a slide receiving portion 18A formed of a plate-like elastic member having an opening 18a at a position facing the slide shaft portion 12 of the reflecting plate 11, and a slide receiving portion 18A. And a sliding receiving / attaching portion 18B attached to the first heat-transmitting tube 1. The sliding receiving portion 18 </ b> A formed of a plate-like elastic member extends in the direction in which the sliding shaft portion 12 of the reflecting plate 11 is led out. The opening 18a into which the sliding shaft portion 12 is inserted has a long hole shape in which the direction of the sliding shaft portion 12 is long, and is formed so that a part of the portion where the opening 18a is formed is lifted. For this reason, the sliding shaft portion 12 of the reflecting plate 11 is configured to be inserted into the opening 18a of the sliding receiving portion 18A. Further, the sliding receiving portion 18A formed of a plate-like elastic member is formed with a sliding receiving holding portion 18b that protrudes in a direction facing the container holding portion 10. The slide receiving / holding portion 18b is configured to be inserted and fixed in a bottomed hole 10b formed on the side surface of the opposite container holding portion 10.

The slide receiver mounting portion 18B fixed to, for example, welded to the slide receiver 18A is composed of a ring-shaped wire, and is formed so as to be mounted in close contact with the outer surface of the first heat-permeable tube 1. . The slide receiving member 18 is inserted between the first heat permeable tube 1 and the second heat permeable tube 2 by passing through the first heat permeable tube 1 and mounting on the outer surface thereof. It is fixed so as not to move in the gap. As described above, in the sliding portion shown in FIG. 14, since the sliding receiving portion 18A of the sliding receiving member 18 is made of a plate material, the sliding shaft portion 12 and the sliding receiving portion 18A are more stable. It has a dynamic effect and also has an effect of radiating the radiant heat received from the heating element 3 by the sliding receiving portion 18A.
Although the slide receiving / mounting portion 18B has been described with a ring-shaped wire, the present invention does not necessarily have a ring shape, and may be any configuration as long as the slide receiving member 18 can be mounted on the first heat-permeable tube 1. For example, an arc-shaped slide receiving / mounting portion in which a part of the ring is missing can be used, and the same effect can be obtained.

  FIG. 15 shows a configuration in which the configurations of the slide receiving portions 17 and 18 and the slide shaft portion 12 described with reference to FIGS. 13 and 14 are reversed, and shown in FIG. 10 in the first embodiment. It is a perspective view which shows another form of a structure.

  In the sliding portion shown in FIG. 15, a sliding shaft member 120 having a sliding shaft portion 120 a is formed of a wire, and the sliding shaft member 120 is configured to be fixed to the container holding portion 10. The sliding shaft member 120 includes a sliding shaft portion 120a formed at an end portion facing the reflecting plate 110, and a sliding shaft holding portion 120b formed at an end portion facing the container holding portion 10. Yes. The sliding shaft member 120 has a sliding shaft mounting portion 120c formed between the sliding shaft portion 120a and the sliding shaft holding portion 120b. The sliding shaft mounting portion 120 c is formed in a ring shape and is mounted in close contact with the outer surface of the first heat transfer tube 1.

  In the sliding portion shown in FIG. 15, a sliding receiving portion 110 a for sliding the sliding shaft portion 120 a is formed on the reflecting plate 110. As shown in FIG. 15, two slits parallel to each other in the longitudinal direction of the reflecting plate 110 are formed at positions where the sliding shaft portion 120 a should slide near the end of the reflecting plate 110. ing. The two slits are formed with the same length perpendicular to the longitudinal direction of the reflecting plate 110. In the reflecting plate 110, a portion sandwiched between the two slits is recessed inward, and the opening is provided so that the sliding shaft portion 120a disposed along the inner surface of the reflecting plate 110 is slidably inserted. Is formed. This opening becomes a sliding receiving portion 110a into which the sliding shaft portion 120a is slidably inserted. Since the sliding portion configured as shown in FIG. 15 has no joint portion, it has a highly reliable configuration and an excellent workability.

Although the sliding shaft mounting portion 120c of the sliding shaft member 120 has been described in a ring shape, the present invention does not necessarily have a ring shape, and the sliding shaft member 120 is mounted on the outer surface of the first heat transfer tube 1. Any configuration can be used.
In the heating element unit according to the third embodiment of the present invention, the container holding member 10 and the bottoms 10a, 10b having a bottom are formed in the container holding member 10 as a fixing structure of the slide receiving holding parts 17b, 18b and the sliding shaft holding part 120b. However, the present invention is not limited to the above-described fixing method. For example, 10a, 10b, and 10c formed in the container holding unit 10 are through holes, and are described in the first embodiment. It is preferable to fix using the adhesive 14 which fixes the 1st heat-permeable tube 1 and the container holding part 10 which were made. With this configuration, the workability is excellent, and the sliding bearing holding portions 17b and 18b and the sliding shaft holding portion 120b can be more firmly fixed, and the configuration is excellent in safety and reliability.

  As described above, in the heating element unit according to the third embodiment of the present invention, the first heat permeable tube 1 and the second heat permeable tube 2 are arranged in the gap (gap) by the sliding portion having a simple configuration. The provided reflectors 11 and 110 can be configured to be slidable, and a heat source with high directivity, reliability, and efficiency can be realized.

Embodiment 4
Hereinafter, a heating element unit according to Embodiment 4 of the present invention will be described with reference to FIGS. FIG. 16 is a front view showing the configuration of the heating element unit according to the fourth embodiment. FIG. 17 is a plan view showing the heating element unit according to the fourth embodiment shown in FIG. Note that the surface shown in the front view of FIG. 16 is the surface to be heated.

  The heating element unit of the fourth embodiment is different from the heating element unit of the first embodiment shown in FIG. 1 described above in that it is housed in a double container composed of a heat-transmitting heat-transmitting tube. This is the configuration of the heating element component. Therefore, also in the heat generating unit of the fourth embodiment, the first heat transmitting tube (first container) 1 that houses the heat generating member 3 and the second heat transmitting tube (second container) that covers the first heat transmitting tube 1 are used. Container) 2. The first heat-transmitting tube 1 and the second heat-transmitting tube 2 are fixed with a predetermined gap (gap) by container holding portions 10 provided at both end portions thereof. A reflecting plate 11 is disposed in the gap between the first heat-transmitting tube 1 and the second heat-transmitting tube 2, and the reflecting plate 11 includes a sliding shaft portion 12 and a sliding receiving portion 13. The moving part is slidably held at a predetermined position.

  In the description of the heating element unit according to the fourth embodiment, the heating element component will be described, and the description of the first embodiment will be used for other configurations. In addition, in the heat generating unit of Embodiment 4, what has the same function and structure as the heat generating unit of Embodiment 1 is attached | subjected and demonstrated.

  In the heating element unit according to the fourth embodiment, a belt-like heating element 20 in the form of a film sheet is disposed inside the first heat transfer tube 1. The belt-shaped heating element 20 is extended along the longitudinal direction of the first heat transfer tube 1.

  In the heating element unit according to the fourth embodiment, the heating element component includes an elongated belt-like heating element 20 as a heat radiation film body, a holder 21 attached to both ends of the heating element 20, an internal lead wire 22, The support ring 23, the molybdenum foil 8, and the external lead wire 9 are included. A through hole formed at the end of the heating element 20 sandwiched by the holder 21 is latched by the end of the internal lead wire 22. The internal lead wire 22 is electrically connected to the external lead wire 9 led out from the both ends of the first heat-permeable tube 1 through the molybdenum foil 8 embedded in the welded portions at both ends of the first heat-permeable tube 1. Has been.

As shown in FIGS. 16 and 17, a support ring 23 that is a position restricting member having a position restricting function is attached to the internal lead wire 22. The internal lead wire 22 is composed of a single wire, for example, a molybdenum wire, and the support ring 23 is, for example, a molybdenum wire formed in a coil shape.
In addition, although the internal lead wire 22 and the support ring 23 in Embodiment 4 will be described using an example of being formed of molybdenum wire, a metal wire (round bar shape, flat plate shape) made of tungsten, nickel, stainless steel or the like is used. May be used.

  As described above, in the heating element unit according to the fourth embodiment, the holder 21, the internal lead wire 22, the support ring 23, the molybdenum foil 8, and the external lead wire 9 are provided on both sides of the heating element 20. A heating element 20 is stretched at a predetermined position in the first heat-permeable tube 1.

  The support ring 23 in the heating element unit according to the fourth embodiment is wound around the internal lead wire 22 and fixed, and is formed in a coil shape. The support ring 23 has a function as a position restricting member for disposing the heating element 20 at a predetermined position in the first heat-permeable tube 1, and has a diameter larger than the width of the heating element 20. The outer peripheral portion is in a position close to the inner peripheral surface of the first heat transfer tube 1. Therefore, the heating element 20 is not in contact with the first heat-transmitting tube 1 (in the fourth embodiment, the longitudinal axis of the first heat-transmitting tube 1 and the center of the heating element 20 in the longitudinal direction). (Position where the axis is coaxial).

  The support ring 23 configured as described above is configured to be wound around the internal lead wire 22 for supplying power to the heating element 20, and the current from the external lead wire 9 to the heating element 20 is supplied to the support ring 23. This is a configuration in which the path does not pass. As described above, since the current to the heating element 20 does not flow in the support ring 23, it does not generate heat due to the current. The support ring 23 in the heating element unit according to the fourth embodiment has a function of restricting the position of the heating element 20 and also functions as a heat dissipation function that radiates heat conducted from the heating element 20.

  The support ring 23 in the heating element unit according to the fourth embodiment will be described with an example formed of molybdenum wire. However, the support ring 23 has rigidity capable of restricting the position of the heating element 20, and has excellent heat conduction (heat dissipation function) and processing. If it is an easy material, it can be used as the support ring 23, for example, metal materials, such as nickel, stainless steel, tungsten, etc. can be used.

  In the heating element unit according to the fourth embodiment, the material of the heating element 20 itself has elasticity, and the shape pattern of the heating element 20 has elasticity, so that changes due to expansion and contraction in the heating element 20 are absorbed. This mechanism is unnecessary. In particular, since the heating element 20 used in the fourth embodiment has a small coefficient of thermal expansion, the heating element 20 disposed (stretched) in a state where tension is applied at the time of manufacture causes the heating element 20 to expand during heating and the heating element itself. It can be absorbed by the elasticity due to the shape pattern of the heating element 20.

  The heating element 20 used in the heating element unit according to Embodiment 4 of the present invention has a laminated structure in which a carbon-based material is a main component and a part is fixed so that each layer forms a void in the thickness direction, and is excellent. It has a two-dimensional isotropic thermal conductivity, and is formed of a film sheet material having a thermal conductivity of 200 W / m · K or more. Therefore, the belt-like heating element 20 becomes a heat source that generates heat uniformly without temperature unevenness.

  The film sheet material that is a material of the heating element 20 is a high heat resistance obtained by heat-treating a polymer film or a polymer film to which a filler is added in an atmosphere at a high temperature, for example, 2400 ° C. or more, and baking to graphitization. It is an oriented graphite film sheet, has a thermal conductivity in the plane direction of 200 W / m · K or more, and has a characteristic of 600 to 950 W / m · K. As described above, the heating element 20 used in the fourth embodiment has excellent two-dimensional isotropic thermal conduction with a thermal conductivity in the plane direction of 600 to 950 W / m · K.

  Here, the two-dimensional isotropic heat conduction indicates that the heat conductivity in all directions on the plane set by the orthogonal X axis and Y axis is substantially the same. Therefore, in the present invention, the two-dimensional isotropic direction means, for example, one direction (X-axis direction) which is a carbon fiber direction in a heating element formed by arranging carbon fibers side by side in the same direction, or a carbon fiber as a cross. It refers to not only the two directions (X-axis direction and Y-axis direction) that are the carbon fiber directions in the knitted heating element, but also the same properties in the surface direction of the film-sheet-like heating element 20.

  The film sheet material, which is the material of the heating element 20 used in the heating element unit of the fourth embodiment, has a laminated structure, and various surfaces such as a flat surface, a concavo-convex surface, or a waved surface in the surface direction. It has a shape, and gaps are formed between the opposing layers. In this laminated structure of film sheet materials, the image of the formation state of the voids formed between the layers is folded so as to overlap a plurality of times (for example, tens of times, hundreds of times) to make a pie dough, and the pie Similar to the cross-sectional shape of the pie obtained by baking the dough. That is, the heating element 20 has an interlayer structure in which a plurality of film bodies formed of a material containing a carbon-based material are laminated and a part of the lamination direction is fixed, and a film having flexibility in the thickness direction. It is a sheet material. Therefore, the film sheet material which is the material of the heating element 20 is a material having excellent two-dimensional isotropic thermal conductivity with the same thermal conductivity in the plane direction.

  Examples of the polymer film used as the film sheet material manufactured as described above include polyoxadiazole, polybenzothiazole, polybenzobisthiazole, polybenzoxazole, polybenzobisoxazole, polypyromellitimide (pyromellitimide) ), Polyphenylene isophthalamide (phenylene isophthalamide), polyphenylene benzimitazole (phenylene benzimitazole), polyphenylene benzobisimitazole (phenylene benzobisimitazole), polythiazole, polyparaphenylene vinylene And at least one kind of polymer film. In addition, as fillers added to the polymer film, phosphate ester, calcium phosphate, polyester, epoxy, stearic acid, trimellitic acid, metal oxide, organotin, lead, azo, Examples thereof include nitroso and sulfonyl hydrazide compounds. More specifically, examples of the phosphate ester compound include tricresyl phosphate, phosphoric acid (trisisopropylphenyl), tributyl phosphate, triethyl phosphate, trisdichloropropyl phosphate, trisbutoxyethyl phosphate, and the like. be able to. Examples of calcium phosphate compounds include calcium dihydrogen phosphate, calcium phosphate hydrogen, tricalcium phosphate, and the like. Examples of polyester compounds include polymers obtained by reaction of adipic acid, azelaic acid, sebacic acid, phthalic acid and the like with glycols and glycerins. Examples of stearic acid compounds include dioctyl sebacate, dibutyl sebacate, and acetyl tributyl citrate. Examples of the metal oxide compound include calcium oxide, magnesium oxide, lead oxide and the like. Examples of trimellitic acid compounds include dibutyl fumarate and diethyl phthalate. Examples of the lead compound include lead stearate and lead silicate. Examples of the azo compound include azodicarbonamide and azobisisobutyronitrile. Examples of the nitroso compound include nitrosopentamethylenetetramine. Examples of the sulfonyl hydrazide compound include p-toluenesulfonyl hydrazide.

  The film sheet material is laminated, processed in an inert gas at 2400 ° C. or higher, and controlled by adjusting the pressure of the gas processing atmosphere generated in the process of graphitization to produce a film sheet heating element . Furthermore, if necessary, the film sheet-shaped heating element produced as described above is subjected to a rolling treatment to obtain a higher-quality film sheet-shaped heating element. The film sheet-shaped heating element manufactured in this way is used as the heating element 20 in the heating element unit of the fourth embodiment.

  In addition, the range of 0.2-20.0 weight% is suitable for the addition amount of the said filler, More preferably, it is the range of 1.0-10.0 weight%. The optimum addition amount differs depending on the thickness of the polymer. When the polymer thickness is thin, the addition amount is preferably large, and when it is thick, the addition amount may be small. The role of the filler is to make the film after heat treatment into a uniform foamed state. That is, the added filler generates a gas during heating, and the cavity after the generation of the gas becomes a passage to help the gentle passage of the decomposition gas from the inside of the film. The filler thus helps to create a uniform foamed state.

  The film sheet material manufactured as described above is processed into a desired shape by, for example, a Thomson or Pinnacle punch, a sharp blade such as a rotary die cutter, or laser processing.

  The heating element 20 in the heating element unit according to the fourth embodiment has a thickness of 100 μm, the width of the heat generation part that generates heat in the heat generation element 20 is 6.0 mm, and the length of the heat generation part is 300 mm. The length, width, and thickness of the heating element 2 are determined by the input voltage, the heating temperature, etc., and can be appropriately changed according to the product specifications and application as the heat source in which the heating element unit is used. is there.

  As shown in FIG. 17, a plurality of slits are extended in a direction perpendicular to the longitudinal direction of the heating element 20 in the heating portion of the heating element 20 in the heating element unit of the fourth embodiment. The plurality of slits formed in the heat generating portion regulate the resistance value by regulating the direction of current flow in the heat generating portion. As the slit shape formed in the heat generating portion, there are a through-hole and a bottomed groove depending on a product specification and application in which the heat generating unit is used. Further, in the concave groove, the resistance value of the heat generating portion can be adjusted by changing the depth in the thickness direction.

  Further, by forming a slit in the heating element 20 in the heating element unit of Embodiment 4, the heating element 20 has a large elasticity due to the elasticity of the slit shape in addition to the elasticity of the heating element itself. It will have.

  The heating element 20 used in the heating element unit according to the fourth embodiment has excellent characteristics that it is light and thin, has a small heat capacity, and quickly rises when heat is generated by energization. For this reason, in the heat generating unit of Embodiment 4, it has the outstanding responsiveness and can be heated efficiently. Further, since the heating element 20 in the heating element unit of the fourth embodiment is light and thin, the tension for tensioning the heating element 20 may be small. In the heating element unit according to the fourth embodiment, the heating element 20 to which a small tension set at the time of manufacture is applied can absorb the thermal expansion at a desired position in the container and reliably maintain the tensioned state.

As described above, in the heating element unit according to the fourth embodiment, the heating element 20 has an excellent rise and has high responsiveness, and therefore, between the first heat transfer tube 1 and the second heat transfer tube 2. The reflector 11 that is disposed in the gap and reflects the radiant heat from the heating element 20 with high efficiency is provided so as to be slidable. Therefore, the heat source has excellent responsiveness and provides high efficiency with high reliability. be able to.
The heating element 20 described in the fourth embodiment has a laminated structure in which a carbon-based substance is a main component as a heating element material, and a part of the layers is fixed so as to form voids in the thickness direction. Although it demonstrated by the example formed with the film sheet-like material which has isotropic heat conduction and heat conductivity is 200 W / m * K or more, this invention is limited to such a heating element material. For example, even when a coiled tungsten wire, carbon fiber, or carbon fiber is knitted, the same effect as the present invention can be obtained.

Embodiment 5
Hereinafter, the heating apparatus of Embodiment 5 which concerns on this invention is demonstrated using attached FIG. FIG. 18 is a cross-sectional view showing the structure of the heating device according to the fifth embodiment.

  The heating device of the fifth embodiment uses the heating element unit of the first embodiment described above as a heat source, and is configured by arranging two sets of heating element units 30 and 31 above and below the object to be heated. is there. The heating element units 30 and 31 shown in FIG. 18 are examples using the heating element unit of the first embodiment shown in FIG. 1, but the reflectors of FIGS. 3 to 15 described in the other embodiments. The heating element unit using the sliding portion has the same effect.

  As shown in FIG. 18, in the heating apparatus, heating element units 30 and 31 having the same configuration as the heating element unit described in the first embodiment are arranged above and below a wire mesh 24 on which an object to be heated is placed. Each of the heating element units 30 and 31 is fixed to an internal housing 32 that forms a heating space that is a heating region at the position of the container holding unit 10 provided on both ends thereof. The heating element units 30 and 31 and the inner housing 32 may be fixed by a sealing member, for example, a member having heat resistance and flexibility such as a bush. By using the sealing member in this manner, the device internal space between the external housing 33 and the internal housing 32 that constitutes the appearance of the heating device is reliably isolated from the heating space in a liquid-tight state. Inflow of contaminants from the space is prevented.

  Further, in the heating device, power is supplied to the external lead wires 9 led out from the sealing portions at both ends of each heating element unit 30, 31 in the internal space between the internal housing 32 and the external housing 33. And a control circuit 25 for controlling power supply to the heating element units 30 and 31.

  The reflecting plate 11 of the heating element units 30 and 31 provided in the heating device of the fifth embodiment is arranged at a position intersecting the planar portion of the heating element 3 of each heating element unit 30 and 31 and is a flat portion of the heating element 3. It is arranged so as to reflect the heat radiated from and to the heated object 19 on the wire mesh 24 in a uniform state over a wider range. In the heating device according to the fifth embodiment shown in FIG. 18, the heating element units 30 and 31 as the heat sources have the reflector 11 and are configured to uniformly heat a wide heating area. There is no need to provide a reflection plate inside, the number of parts is reduced, the assembly is easy, and the heating device can be downsized.

  In addition, since the heating apparatus of Embodiment 5 uses the heat generating body unit which has arrange | positioned the reflecting plate 11 in the clearance gap between the 1st heat permeable pipe 1 and the 2nd heat permeable pipe 2, it is the inside of a heating apparatus. However, in order to more efficiently heat the heating area on the wire mesh 24 in the heating device, the upper side of the upper heating element unit 30 and the lower heating element unit 31 are provided. Further reflecting means may be provided on the lower side. By providing the reflection means in the heating device in this way, it becomes possible to heat the heating region in which the radiant heat from each heating element unit is specified more efficiently.

  Further, by providing the heating element units 30 and 31 having the reflection plate 11 as a heat source and further providing the heating device with reflection means, the position and shape of the reflection plate 11 and the reflection means of the heating device in each heating element unit are changed. As a result, it is possible to set (control) the width and directivity of the heating area, and it is possible to use the heating area according to the intended use.

  In the heating device according to the fifth embodiment, the power source is supplied to the heating element units 30 and 31 and the electric circuit to be controlled is arranged in the internal space. However, the present invention is limited to such a configuration. Needless to say, a configuration in which the electric circuit is arranged outside the outer casing of the heating device has the same effect.

  As described above, in the heating apparatus of the fifth embodiment, the heating element unit is arranged as a heat source, and performs wide-range heating, heating by parallel heat rays, heating without unevenness due to irregular reflection, heating without contamination, and heating with high radiation efficiency. It can be performed, and the heating apparatus is highly versatile according to the object to be heated and the usage environment.

  In the heating device according to the fifth embodiment, when energization control is performed on the heating element unit by the control circuit, control in consideration of the temperature condition is also possible as a selection condition for the energization control. As temperature control, for example, on / off control using a temperature detection means such as a thermostat, phase control of an input power source using a temperature detection sensor that senses an accurate temperature, power supply rate control, zero cross control, etc. alone or By performing in combination, it is possible to realize a heating device capable of highly accurate temperature management. Therefore, according to the heating apparatus of the fifth embodiment configured as described above, heating with excellent radiation characteristics and high-accuracy temperature management are possible by directivity change control and energization control of the planar portion of the heating element. .

  As described above, in the heat generating unit according to the present invention, the first heat transmitting tube 1 including the two heat transmitting tubes 1 and 2 having different diameters and including the heat generating members 3 and 20, and the first heat transmitting tube. A reflector 11 is slidably provided in the longitudinal direction in the gap with the second heat-transmitting tube 2 containing 1 facing the heating elements 3 and 20. The heating element unit according to the present invention configured as described above increases the directivity of the radiant heat from the heating elements 3 and 20 and provides the sliding plate 11 by the radiant heat from the heating elements 3 and 20 by providing a sliding portion. It becomes a structure that can absorb the thermal expansion of, and is a reliable and efficient heat source. Moreover, in the heating element unit according to the present invention, contamination of the reflector 11 is prevented, and high radiation efficiency can be maintained. Furthermore, by providing the heating element unit configured as described above as a heat source of the heating device, it is possible to provide a heating device having a small size, high directivity, and high heating efficiency.

  The heating element unit according to the present invention is a heat source with high reliability and efficiency, and can be used for various devices that require a heat source, so that it has high versatility and is useful in various fields.

Sectional drawing which shows the structure of the heat generating unit of Embodiment 1 which concerns on this invention. The expanded sectional view which shows the vicinity of the container holding | maintenance part in the heat generating body unit of Embodiment 1. The perspective view which shows the specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2 which concerns on this invention. The perspective view which shows the other specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate and sliding part in the heat generating body unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate in the heat generating unit of Embodiment 2. FIG. The perspective view which shows the other specific structure of the reflecting plate in the heat generating unit of Embodiment 2. FIG. The perspective view which shows the sliding part in the heat generating body unit of Embodiment 3 which concerns on this invention. The perspective view which shows another structure of the sliding part shown in FIG. The perspective view which shows the sliding part which reversed the structure of the sliding receiving part and sliding shaft part which were shown in FIG.13 and FIG.14. The top view which shows the structure of the heat generating body unit of Embodiment 4 which concerns on this invention. The front view which shows the structure of the heat generating body unit of Embodiment 4 which concerns on this invention. The figure which shows the internal structure of the heating apparatus of Embodiment 5 which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st heat exchanger tube 2 2nd heat exchanger tube 3 Heat generating body 4 Holding part 5 Coil part 6 Spring part 7 Internal lead wire 8 Molybdenum foil 9 External lead wire 10 Container holding part 11 Reflecting plate 12 Sliding shaft part 13 Sliding Receiving part 14 Adhesive material 15 Adhesive material 16 Sliding receiving part 17 Sliding receiving member 18 Sliding receiving member 19 Heated object 20 Heating element 21 Holder 22 Internal lead wire 23 Support ring 24 Wire mesh 25 Control circuit 26 Power supply circuit 30 Heating element unit 31 Heating element unit 32 Internal housing 33 External housing

Claims (19)

A first container that houses a long heating element;
A second container covering the first container;
A double-layer heating element unit comprising: a container holding unit that holds a gap between the first container and the second container at a predetermined distance;
A long reflector provided in the gap and disposed at a position facing the heating element;
A sliding portion disposed outside in the longitudinal direction of the reflecting plate, and holding the reflecting plate slidably in the longitudinal direction of the heating element;
A heating element unit comprising: The sliding part is
A sliding shaft portion derived from one end of the reflector in the longitudinal direction of the heating element;
A slide that is provided at a position opposite to the sliding shaft portion in the lead-out direction of the container holding portion, holds the tip portion of the sliding shaft portion, and arranges the reflector so as to be slidable in the longitudinal direction of the heating element. The heating element unit according to claim 1, further comprising a moving part. The sliding part is
A sliding shaft portion derived from one end of the reflector in the longitudinal direction of the heating element;
A sliding receiving portion is provided which is provided at a position opposite to the sliding shaft portion in the lead-out direction, holds the tip portion of the sliding shaft portion, and arranges the reflecting plate so as to be slidable in the longitudinal direction of the heating element. The heating element unit according to claim 1, further comprising a sliding receiving member. The sliding part is
A sliding shaft member formed with a sliding shaft portion led out in the longitudinal direction of the heating element in the gap;
A slide that is provided at a position opposite to the slide shaft in the lead-out direction of the reflector, holds the tip of the slide shaft, and arranges the reflector so as to be slidable in the longitudinal direction of the heating element. The heating element unit according to claim 1, further comprising a receiving portion.   The heating element unit according to claim 2 or 3, wherein the sliding shaft portion is formed integrally with the reflecting plate having the sliding shaft portion.   The heating element unit according to claim 2 or 3, wherein the sliding shaft portion is fixed to the reflection plate having the sliding shaft portion.   4. The heating element unit according to claim 2, wherein the sliding shaft portion is fitted and fixed to a concave portion formed in the reflection plate having the sliding shaft portion.   The heating element unit according to claim 2, wherein the sliding receiving portion is a hole formed in the container holding portion having the sliding receiving portion, and the sliding shaft portion is held in the hole. .   The heat generating device according to claim 3, wherein the sliding receiving member includes a sliding receiving portion that holds the sliding shaft portion, and a sliding receiving holding portion that holds the sliding receiving member on the container holding portion. Body unit.   The sliding shaft member is formed of a wire, and has a sliding shaft portion that is led out in a longitudinal direction of the heating element, and a sliding shaft holding portion that holds the sliding shaft member on the container holding portion. Item 5. The heating element unit according to Item 4.   The heating element unit according to claim 9, wherein the sliding receiving member includes a sliding receiving mounting portion that is mounted on the first container.   The heating element unit according to claim 10, wherein the sliding shaft member has a sliding shaft mounting portion mounted on the first container.   The heating element unit according to any one of claims 2 to 12, wherein the first container and the second container are formed of a tubular heat-permeable member.   The heating element unit according to any one of claims 2 to 13, wherein the sliding shaft portion has a rectangular cross section perpendicular to the longitudinal direction of the reflecting plate.   The heating element unit according to any one of claims 2 to 14, wherein the sliding shaft portion includes a plurality of rod-shaped bodies.   The heating element unit according to any one of claims 1 to 15, wherein the reflecting plate has an arc shape in a cross section orthogonal to a longitudinal direction of the reflecting plate.   The heating element unit according to any one of claims 1 to 15, wherein the reflecting plate has a polygonal cross section perpendicular to the longitudinal direction of the reflecting plate.   The heating element unit according to any one of claims 1 to 17, wherein the reflecting plate has a concave or convex shape in a part of a cross section orthogonal to the longitudinal direction of the reflecting plate.   A heating device equipped with the heating element unit according to any one of claims 1 to 18 as a heat source.

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